JPS6440937A - Image forming device with picture quality adjusting function - Google Patents

Image forming device with picture quality adjusting function

Info

Publication number
JPS6440937A
JPS6440937A JP19874687A JP19874687A JPS6440937A JP S6440937 A JPS6440937 A JP S6440937A JP 19874687 A JP19874687 A JP 19874687A JP 19874687 A JP19874687 A JP 19874687A JP S6440937 A JPS6440937 A JP S6440937A
Authority
JP
Japan
Prior art keywords
light source
microcapsule
auxiliary exposure
exposure light
picture quality
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP19874687A
Other languages
Japanese (ja)
Inventor
Kunio Ohashi
Shoichi Nagata
Koji Tsujimoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sharp Corp
Original Assignee
Sharp Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sharp Corp filed Critical Sharp Corp
Priority to JP19874687A priority Critical patent/JPS6440937A/en
Priority to US07/224,937 priority patent/US4910550A/en
Publication of JPS6440937A publication Critical patent/JPS6440937A/en
Pending legal-status Critical Current

Links

Landscapes

  • Projection-Type Copiers In General (AREA)

Abstract

PURPOSE:To obtain an image which is free of specific coloring and has superior gradational reproducibility by correcting the gamma of a microcapsule by using an auxiliary exposure light source. CONSTITUTION:The auxiliary exposure light source 6 is arranged opposite in front of the exposure point P of a photoreceptor sheet 3. The auxiliary exposure light source 6 consists of a light source composed of a tungsten lamp, etc., and three kinds of light source lamps 61-63 where filters for transmitting respective light beams of B(blue), G(green), and R(red) are interposed. The auxiliary exposure light source 6 exposes the photoreceptor sheet 3 in a nonimage state right before the photoreceptor sheet 3 is exposed to original reflected light, and the oxygen in the microcapsule is removed to correct the gamma of the microcapsule. Consequently, such trouble that specific coloring is caused in a specific density range is eliminated and the coloring of a formed image is made accurate to improve the picture quality.
JP19874687A 1987-08-07 1987-08-07 Image forming device with picture quality adjusting function Pending JPS6440937A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP19874687A JPS6440937A (en) 1987-08-07 1987-08-07 Image forming device with picture quality adjusting function
US07/224,937 US4910550A (en) 1987-08-07 1988-07-27 Image formation apparatus with supplemental light source

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19874687A JPS6440937A (en) 1987-08-07 1987-08-07 Image forming device with picture quality adjusting function

Publications (1)

Publication Number Publication Date
JPS6440937A true JPS6440937A (en) 1989-02-13

Family

ID=16396278

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19874687A Pending JPS6440937A (en) 1987-08-07 1987-08-07 Image forming device with picture quality adjusting function

Country Status (1)

Country Link
JP (1) JPS6440937A (en)

Similar Documents

Publication Publication Date Title
DE3167753D1 (en) Process and apparatus for exposing photographic material when making colour reproductions
JPS53144339A (en) Light transmitting particles for color image formation
JPS5250230A (en) Method for forming color photographic image
JPS539523A (en) Camera with light source light recording device
US2703281A (en) Auxiliary screening apparatus and method for multicolor photogravure
GB1328299A (en) Process for the manufacture of a screened photographic colour copy which simulates a multi-colour print
JPS6440937A (en) Image forming device with picture quality adjusting function
JPS5530214A (en) Color picture read method
JPS6440935A (en) Image forming device provided with auxiliary exposure device
JPS56113139A (en) Preparation of color proof
GB1317874A (en) Process for the manufacture of a screened photographic colour copy which simulates a multi-colour print
US2165407A (en) Color correction
US3615425A (en) Method of making a color photographic print from a color transparency or the like
JPS57148742A (en) Picture reproduction and its production
US4293216A (en) Method of producing color separation negatives with reduced contrast
US4774165A (en) Method for direct making of lithographic printing plates
IT1199439B (en) CALIBRATION PROCEDURE AND DEVICE FOR A PHOTO ENLARGER OR REPRODUCER
JPS538012A (en) Facsimile trnsmission unit
JPS57179832A (en) Light source for color printer
WO1995002849A1 (en) A device for colour photograph printing
JPS5622434A (en) Preparation of master film from negative color film type original image
US3640618A (en) Method and apparatus for photographic color printing
JPS5910942A (en) Color photograph printing device
JPS6466643A (en) Color photosensitive material and image forming method
JPS6226453B2 (en)